/* errror.c */
void error(char* msg);

/* open_url.c */
void open_url(char *url);

/* catch_signal.c */
int catch_signal(int sig, void (*handler) (int));

/* diediedie.c */
void diediedie(int sig);

/* times_up.c */
void times_up(int sig);

/* end_game.c */
void end_game(int sig);

